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| A New Method to Leak Detection in Water System Based on Chaos Theory |
| ZHANG Qin1,ZHU Qing-jian2,WANG Xiong-hai1 |
1.Institute of Electric Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China;
2.Huaxin Consulting Co. Ltd, Hangzhou, Zhejiang 310014, China |
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Abstract Considering the importance of leak detection to energy efficiency in urban water system, a new method to leak detection based on chaos theory is presented. The chaotic evolutional characters of successive users were used to detect pipe break or the leakage.By extracting the correlation dimension、Lyapunov exponent、attractor phase diagram and R/S analysis of hourly water consumption, the water time series of successive users were proved to be fractal and chaotic chaining relevant. On the basis, the different chaotic characters of booster and leakage were compared by phase diagram and the maximum Lyapunov exponent variation. Test results show that the chaotic characters are changed immediately when the booster occurs, and slow leakage can be discovered after two hours. Thus this method supplies new judgments to effectively amend water system in time and decrease the loss of water resource.
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2013, Vol. 34 
